Gunnarsson-Schonhammer theory

In the spirit of the Kotani/Toyozawa/Gunnarsson/Schonhammer approach, which was shown to work well for the calculation of the core levels of La203, the core level spectra of CeOj have been calculated (Jo and Kotani 1985 see also Schneider et al. 1985, Fujimori 1985). Figure 9 shows the calculated spectrum for one of the 3d3/2,s/2 doublets and the inset gives a measured spectrum (Kotani and Jo 1986). The calculation clearly reproduces the three final states which can be read off the diagram in fig. 7. The inset shows a measured 3d spectrum of Ce02 (similar to the one in fig. 8) and one can realize that the theory represents the experimental data quite well (Kotani and Jo 1986). 

Gunnarsson, O., and K. Schonhammer, 1985, in Theory of Heavy-Fermions and Valence Fluctuations, Springer Series in Solid State Sciences, Vol. 62, eds T. Kasuya and T. Saso (Sprin-... 

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